import 'package:flutter/material.dart';

class ArmBar extends StatefulWidget {
  ArmBar({Key key}) : super(key: key);

  @override
  _ArmBarState createState() => _ArmBarState();
}

class _ArmBarState extends State<ArmBar> with AutomaticKeepAliveClientMixin{

  @override
  void initState() { 
    super.initState();
    debugPrint("armbar");
  }
  @override
  Widget build(BuildContext context) {
    super.build(context);
    return Container(
       child: Center(
         child: Text("armbar"),
       ),
    );
  }
   @override
  bool get wantKeepAlive=>true;
}